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化学需氧量 20ml 水质标液(浓度1000ug/ml)

A16597100AL-100

Pyraflufen (free acid) 100 µg/mL in Acetonitrile

2',3,4,4',5-Pentachlorobiphenyl,100 μg/mL in Isooctane

Propyl Benzoate

Phenazopyridine

Dibenzoyl-L-tartaric acid

Mepronil 10 µg/mL in Cyclohexane

Fluorescein 5-Maleimide

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